Abstract
Seedlings of corn (Zea mays) were tested for recovery from chilling injury incurred at 0.3 ± 0.3 C. At 0.3 C visual leaf injury appeared in 36 hours, whereas stem and root injuries appeared later. Appearance of leaf injury was preceded by a rise in O2 uptake and a lessened effect of 2,4-dinitrophenol on O2 uptake by leaf segments and was accompanied by increased ion leakage from the leaves. These effects were reversible, in that transfer of seedlings to 21 C after 36 hours at 0.3 C produced a return of O2 uptake, 2,4-dinitrophenol stimulation, and ion leakage to the levels of unchilled leaves, as well as a disappearance of leaf symptoms, within 72 hours. For most seedlings, transfer to 21 C after 48 to 60 hours at 0.3 C reversed the chilling effects on O2 uptake, 2,4-dinitrophenol stimulation, and injury symptoms but not on ion leakage within 108 hours. However, some seedlings collapsed during 48 to 60 hours of chilling, and these never recovered. Transfer to 21 C after 72 hours at 0.3 C did not produce recovery from any symptom of chilling injury examined, and these seedlings soon died. No growth occurred at 0.3 C, but growth began soon after transfer to 21 C. Seedlings chilled 24 or 36 hours grew at reduced rates during the first 72 hours at 21 C, but within 96 hours at 21 C were growing at the same rate as nonchilled seedlings. These results demonstrate considerable capacity of growing plants to recover from short chilling treatments even though significant physiological changes occurred at low temperatures.
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Selected References
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- Baddeley M. S., Hanson J. B. Uncoupling of energy-linked functions of corn mitochondria by linoleic Acid and monomethyldecenylsuccinic Acid. Plant Physiol. 1967 Dec;42(12):1702–1710. doi: 10.1104/pp.42.12.1702. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Christiansen M. N. Influence of Chilling upon Seedling Development of Cotton. Plant Physiol. 1963 Sep;38(5):520–522. doi: 10.1104/pp.38.5.520. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Eaks I. L. Physiological Studies of Chilling Injury in Citrus Fruits. Plant Physiol. 1960 Sep;35(5):632–636. doi: 10.1104/pp.35.5.632. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lewis D. A. Protoplasmic Streaming in Plants Sensitive and Insensitive to Chilling Temperatures. Science. 1956 Jul 13;124(3211):75–76. doi: 10.1126/science.124.3211.75. [DOI] [PubMed] [Google Scholar]
- Lieberman M., Craft C. C., Audia W. V., Wilcox M. S. Biochemical Studies of Chilling Injury in Sweetpotatoes. Plant Physiol. 1958 Sep;33(5):307–311. doi: 10.1104/pp.33.5.307. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lyons J. M., Raison J. K. Oxidative activity of mitochondria isolated from plant tissues sensitive and resistant to chilling injury. Plant Physiol. 1970 Apr;45(4):386–389. doi: 10.1104/pp.45.4.386. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lyons J. M., Wheaton T. A., Pratt H. K. Relationship between the Physical Nature of Mitochondrial Membranes and Chilling Sensitivity in Plants. Plant Physiol. 1964 Mar;39(2):262–268. doi: 10.1104/pp.39.2.262. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Stewart J. M., Guinn G. Chilling injury and changes in adenosine triphosphate of cotton seedlings. Plant Physiol. 1969 Apr;44(4):605–608. doi: 10.1104/pp.44.4.605. [DOI] [PMC free article] [PubMed] [Google Scholar]